Base station, mobile communication system, and mobile communication control method

a mobile communication system and control method technology, applied in the field of base stations, can solve the problems of increasing the load of signal processing in the control station, unable to prevent the non-communication state from lasting a certain period of time, and requiring a long period of time for the switch of paths, so as to achieve smooth processing of the control signal and increase the load

Inactive Publication Date: 2011-10-25
NTT DOCOMO INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0011]Hence, the present invention aims to prevent, when a mobile station changes a communicating base station with which the mobile station performs a radio communication, increase of a load in a base station and in a control station, and loss of communication resource between the base station and the control station, and hence, to allow the control station to smoothly process a control signal from the base station.

Problems solved by technology

However, the switching of paths requires a long period of time in cases, such as when processing load in the control station is high.
However, although being capable of releasing the non-communication state, the conventional methods are incapable of preventing the non-communication state from lasting for a certain period of time.
However, the use of these methods have caused new problems, such as increase of the load for signal processing in the base station and in the control station, and loss of communication resource between the base station and the control station.

Method used

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  • Base station, mobile communication system, and mobile communication control method
  • Base station, mobile communication system, and mobile communication control method
  • Base station, mobile communication system, and mobile communication control method

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Embodiment Construction

[0031](Mobile Communication System)

[0032]As shown in FIG. 1, a mobile communication system 100 includes a plurality of base stations 10a to 10e, a plurality of mobile stations 20a to 20c, a plurality of control stations 30a and 30b, and a core network 40.

[0033]The mobile communication system 100 provides a mobile communication service by dividing the entire service area into a plurality of radio zones. Specifically, a plurality of cells 1a to 1e exists as the plurality of radio zones, in the mobile communication system 100.

[0034]The mobile stations 20a to 20c each set a radio channel (a radio network) with the base station covering the cell in which the mobile station is, and perform radio communication.

[0035]The base stations 10a to 10e cover the cells 1a to 1e, respectively. The base stations 10a to 10e each set radio channels with the mobile stations locating the cell among the cells 1a to 1e covered by the respective base stations, and perform radio communication.

[0036]The contr...

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Abstract

A target base station transmits a traffic assignment signal a plurality of times to a control station for notifying a traffic amount of downlink data that can be processed by the target base station, after a notified cell change timing in which the mobile station changes a communicating base station.

Description

TECHNICAL FIELD[0001]The present invention relates to a base station, a mobile communication system and a mobile communication control method.BACKGROUND ART[0002]Currently, mobile communication system provides service by segmenting an entire service area into a plurality of radio zones each referred to as a “cell”. In a case where a mobile station moves across different cells in the mobile communication system, a “cell change” is performed. In a “cell change,” the mobile station changes a communicating base station with which the mobile station performs radio communication (e.g., see Non-patent literature 1).[0003]At the time of the cell change, a control station controlling the base station switches the paths for downlink data, where the destination of downlink data transmission is switched from a source base station to a target base station. In addition, the target base station transmits, to the control station, a traffic assignment signal, which is a notification of a processable...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04W4/00H04J3/16H04L12/28G06F11/00H04W36/08H04W92/12
CPCH04W72/0426H04W36/08H04W92/12H04W72/27
Inventor SAO, TOMOKITANAKA, SHINYAISHII, HIROYUKINAKAMURA, TAKEHIRO
Owner NTT DOCOMO INC
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